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Ei ElectronicsEi3018

Name: Ei Electronics Ei3018
Brand: Ei Electronics
SKU: WH18639-0013-01

£41.99View retailers

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The mains-powered Ei Electronics Ei3018 carbon monoxide alarm is built to detect CO for five years and has a warranty to cover this. There is a backup rechargeable battery, which kicks in if there’s a power cut. The alarm can be used in a network of other Aico/Ei alarms, so that if one detects danger, they all sound. You’ll need the Ei3000MRF interlink module (£48) to do this, which also sends data to your smartphone regarding when it detects CO. We tested it back in 2019, so to find out how well this Ei Electronics mains-powered CO alarm detects the deadly gas, read on for our test results and verdict.

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Nov 2023Last checked by Which?
Dec 2019First reviewed by Which?
Jan 2019Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test carbon monoxide detectors

27 Feb 2024

Carbon monoxide (CO) detection

How we test carbon monoxide (co) detection

Five stars means that the CO alarm detected CO in every one of our tests. One star means that the alarm failed to detect CO in one or more of our CO detection tests. We test each carbon monoxide (CO) alarm more than 30 times to see whether it can detect the deadly gas. We test with low concentrations of CO and higher concentrations. We also test with a catastrophically high concentration of the gas. We check whether the alarms respond in time and whether after detecting CO, they can go on to continue to detect the gas.

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